Migrate net/proxy/* to net::IPAddress.

net/base/ip_address_number.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_IP_ADDRESS_NUMBER_H_
 #define NET_BASE_IP_ADDRESS_NUMBER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 63 matching lines @@
     const IPAddressNumber& ipv4_number);
 
 // Returns true iff |address| is an IPv4-mapped IPv6 address.
 NET_EXPORT_PRIVATE bool IsIPv4Mapped(const IPAddressNumber& address);
 
 // Converts an IPv4-mapped IPv6 address to IPv4 address. Should only be called
 // on IPv4-mapped IPv6 addresses.
 NET_EXPORT_PRIVATE IPAddressNumber ConvertIPv4MappedToIPv4(
     const IPAddressNumber& address);
 
-// Parses an IP block specifier from CIDR notation to an
-// (IP address, prefix length) pair. Returns true on success and fills
-// |*ip_number| with the numeric value of the IP address and sets
-// |*prefix_length_in_bits| with the length of the prefix.
-//
-// CIDR notation literals can use either IPv4 or IPv6 literals. Some examples:
-//
-//    10.10.3.1/20
-//    a:b:c::/46
-//    ::1/128
-NET_EXPORT bool ParseCIDRBlock(const std::string& cidr_literal,
-                               IPAddressNumber* ip_number,
-                               size_t* prefix_length_in_bits);
-
 // Compares an IP address to see if it falls within the specified IP block.
 // Returns true if it does, false otherwise.
 //
 // The IP block is given by (|ip_prefix|, |prefix_length_in_bits|) -- any
 // IP address whose |prefix_length_in_bits| most significant bits match
 // |ip_prefix| will be matched.
 //
 // In cases when an IPv4 address is being compared to an IPv6 address prefix
 // and vice versa, the IPv4 addresses will be converted to IPv4-mapped
 // (IPv6) addresses.
 NET_EXPORT_PRIVATE bool IPNumberMatchesPrefix(const IPAddressNumber& ip_number,
                                               const IPAddressNumber& ip_prefix,
                                               size_t prefix_length_in_bits);
 
 // Returns number of matching initial bits between the addresses |a1| and |a2|.
 unsigned CommonPrefixLength(const IPAddressNumber& a1,
                             const IPAddressNumber& a2);
 
 // Computes the number of leading 1-bits in |mask|.
 unsigned MaskPrefixLength(const IPAddressNumber& mask);
 
 }  // namespace net
 
 #endif  // NET_BASE_IP_ADDRESS_NUMBER_H_